tests: don't match blank output lines as regexes in unified tests
Currently, the following unified test will pass:
$ echo foo
A blank output line (a line containing just two spaces) will match any
output.
The patch modifies the unified test runner to ignore empty strings
strings when do regular expression matching.
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Date:
Subject: test-notify-changegroup
From: test
X-Hg-Notification: changeset cb9a9f314b8b
Message-Id:
To: baz, foo@bar
changeset cb9a9f314b8b in test-notify-changegroup/a
details: test-notify-changegroup/a?cmd=changeset;node=cb9a9f314b8b
summary: a
changeset ba677d0156c1 in test-notify-changegroup/a
details: test-notify-changegroup/a?cmd=changeset;node=ba677d0156c1
summary: b
diffs (6 lines):
diff -r 000000000000 -r ba677d0156c1 a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/a Thu Jan 01 00:00:00 1970 +0000
@@ -0,0 +1,2 @@
+a
+a